package com.sky.service.impl;

import ch.qos.logback.core.joran.util.beans.BeanUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.apache.commons.codec.digest.Md5Crypt;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        // 密码比对
        // 进行Md5加密进行比对 对前端传过来的明文密码进行Md5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     */

    public void save(EmployeeDTO employeeDTO) {

        Employee employee = new Employee();
        //Employee属性都是空的，EmployeeDTO拷贝进Employee
        // 对象属性拷贝 前面是源后面是拷贝对象
        BeanUtils.copyProperties(employeeDTO, employee);

        // 设置账号状态，默认正常状态 1：正常 0：锁定
        employee.setStatus(StatusConstant.ENABLE);

        // 设置密码，默认密码123456 要进行Md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        // 设置创建时间和修改时间
        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());

        // 设置当前记录创建人的id和修改人的id
        // 获取当前登录用户id
        // employee.setCreateUser(BaseContext.getCurrentId());
        // employee.setUpdateUser(BaseContext.getCurrentId());


        employeeMapper.insert(employee);
    }



    /**
     * 员工分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        // 开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        PageResult pageResult = new PageResult();
        pageResult.setTotal(total);
        pageResult.setRecords(records);
        return pageResult;
    }

    /**
     * 员工账号启用禁用
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, long id) {

       /* Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);*/

        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();


        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
     * 编辑员工信息
     *
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        // employee.setUpdateUser(BaseContext.getCurrentId());
        // employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);

    }

    /**
     * 员工修改密码
     * @param passwordEditDTO
     */
    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {
        Long empId = BaseContext.getCurrentId();
        // 判断旧密码是否正确
        String oldPassword=passwordEditDTO.getOldPassword();
        String md5OldPassword = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        Employee emp = employeeMapper.getById(empId);
        if (!md5OldPassword.equals(emp.getPassword())){
           throw new PasswordErrorException(MessageConstant.OLD_PASSWORD_ERROR);
        }
        Employee employee=new Employee();
        employee.setId(empId);

        BeanUtils.copyProperties(passwordEditDTO,employee);
        System.out.println(employee);
        // 修改密码，要进行Md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
        employeeMapper.update(employee);
    }

}
